The emphasis in the subjectivity and the minority group's culture is a subject of educator's interest in the last few decades. Appropriating the contributions of Lulács, of Heller and Lefebvre we intend to characterize daily practice's and its relation with the knowledge, being analyzed especially the tendencial valorization of the cultural expressions in its singularity, having as results a misunderstandig in the comprehension of reality and the school's function, making difficult surpass the social inequalities.